Ignition system diagram
Refer to “wire color symbols” in section 0a .

Ignition system components location
Refer to “electrical components location” in section 0a .
Drive mode selector descriptionDTC “c28” (p1655): secondary throttle
valve actuator (stva) malfunction
Detected condition and possible cause
Detected condition
Possible cause
The operation voltage does not reach the stva.
Ecm does not receive communication signal from the
stva. Stva can not operate properly or its motor locked
Stva malfunction.
...
Clutch adjustment
Clutch cable play should be 1 0 -
15 mm (0.4 - 0.6 In) measured at
the clutch lever end. Adjust clutch
cable play according to the following
procedure:
Minor adjustment
Turn the clutch cable adjuster 1
to provide the specified play.
Major adjustment
Turn in the adjuster 1 all the ...
Camshaft sprocket
Inspect the camshaft sprocket in the following
procedures:
remove the intake and exhaust camshafts. Refer to “engine top side
disassembly” .
Inspect the teeth of each camshaft sprocket for wear
or damage.
If they are worn or damaged, replace the sprocket/
camshaft assembl ...